package org.apache.activemq.apollo.util.path

/**
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You under the Apache License, Version 2.0
  * (the "License"); you may not use this file except in compliance with
  * the License.  You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
import java.util.Collection
import java.util.regex.Pattern
import collection.JavaConversions._

/**
  * An implementation of {@link PathNode} which navigates all the children of the given node
  * ignoring the name of the current path (so for navigating using * in a wildcard).
  *
  */
class RegexChildPathNode[Value](node: PathNode[Value], val regex:Pattern) extends AnyChildPathNode[Value](node) {

  override protected def getChildNodes: Collection[PathNode[Value]] = {
    super.getChildNodes.filter { child =>
      child match {
        case child:PathMapNode[Value] =>
          child.getPart match {
            case LiteralPart(name)=>
              regex.matcher(name).matches()
            case _ =>
              false
          }
        case _ => false
      }
    }
  }

}